100% it's more dangerous in the US -- just look how dangerous it is be a pedestrian, or even drive a car in the US. In almost every big city I've been in, the number of drivers that no longer care about the rules is much too high.

Speeding (i.e. going 40MPH+ in 25MPH zones), taking blind turns without caution, distracted driving -- all of that and more are basically normalized along with the injuries and deaths that come along with them.

I would love to ride my bike more regularly, but sadly that is not going to be possible when I would have to ride roads that are 30MPH, but almost every driver drives through at 50MPH+.